Bleached InuYasha Galaxy

Amon says 'We are very select about who joins us. You must prove yourself.'
Amon says 'You need to go out into the world and bring me the following:'
Amon says 'The talon of a gigantic demon, scales of the lesser youkai'
Amon says 'and scales from the lizard demons.'
Amon says 'Then come back here with your proof and tell me you have it.'

(secret phrase)

You give Talons of the Gigantic Demon to Amon.
You give Lesser Youkai Scales to Amon.
You give Lizard Skin to Amon.
Amon looks at you as if sizing you up as a piece of meat.

A scale from A Giant Lizard mysteriously vanishes.

Notice the mob took the lizard skin, instead of the scale from A Giant Lizard, which was in my inventory.